英文關鍵字
electrical
engineer
checking
electric
panel
electrician
using
meter
check
voltage
cable
wiring
system
main
power
board
character
people
maintenance
service
transformer
cabling
electricity
energy
fuse
measure
measurement
repair
repairman
supply
technical
technician
technology
tester
testing
warning
wire
repairing
working
expertise
engineering
connecting
tool
work
worker
test
motion
graphic
animation
hd